'use strict'

var _interopRequireDefault = require('@babel/runtime/helpers/interopRequireDefault')

Object.defineProperty(exports, '__esModule', {
  value: true
})
exports.default = void 0

var _toggleSelection = _interopRequireDefault(require('./toggle-selection'))

var clipboardToIE11Formatting = {
  'text/plain': 'Text',
  'text/html': 'Url',
  default: 'Text'
}
var defaultMessage = 'Copy to clipboard: #{key}, Enter'

function format(message) {
  var copyKey = (/mac os x/i.test(navigator.userAgent) ? '⌘' : 'Ctrl') + '+C'
  return message.replace(/#{\s*key\s*}/g, copyKey)
}

function copy(text, options) {
  var message
  var reselectPrevious
  var range
  var selection
  var mark
  var success = false

  if (!options) {
    options = {}
  }

  var debug = options.debug || false

  try {
    reselectPrevious = (0, _toggleSelection.default)()
    range = document.createRange()
    selection = document.getSelection()
    mark = document.createElement('span')
    mark.textContent = text // reset user styles for span element

    mark.style.all = 'unset' // prevents scrolling to the end of the page

    mark.style.position = 'fixed'
    mark.style.top = 0
    mark.style.clip = 'rect(0, 0, 0, 0)' // used to preserve spaces and line breaks

    mark.style.whiteSpace = 'pre' // do not inherit user-select (it may be `none`)

    mark.style.webkitUserSelect = 'text'
    mark.style.MozUserSelect = 'text'
    mark.style.msUserSelect = 'text'
    mark.style.userSelect = 'text'
    mark.addEventListener('copy', function(e) {
      e.stopPropagation()

      if (options.format) {
        e.preventDefault()

        if (typeof e.clipboardData === 'undefined') {
          // IE 11
          debug && console.warn('unable to use e.clipboardData')
          debug && console.warn('trying IE specific stuff')
          window.clipboardData.clearData()

          var _format = clipboardToIE11Formatting[options.format] || clipboardToIE11Formatting['default']

          window.clipboardData.setData(_format, text)
        } else {
          // all other browsers
          e.clipboardData.clearData()
          e.clipboardData.setData(options.format, text)
        }
      }

      if (options.onCopy) {
        e.preventDefault()
        options.onCopy(e.clipboardData)
      }
    })
    document.body.appendChild(mark)
    range.selectNodeContents(mark)
    selection.addRange(range)
    var successful = document.execCommand('copy')

    if (!successful) {
      throw new Error('copy command was unsuccessful')
    }

    success = true
  } catch (err) {
    debug && console.error('unable to copy using execCommand: ', err)
    debug && console.warn('trying IE specific stuff')

    try {
      window.clipboardData.setData(options.format || 'text', text)
      options.onCopy && options.onCopy(window.clipboardData)
      success = true
    } catch (err) {
      debug && console.error('unable to copy using clipboardData: ', err)
      debug && console.error('falling back to prompt')
      message = format('message' in options ? options.message : defaultMessage)
      window.prompt(message, text)
    }
  } finally {
    if (selection) {
      if (typeof selection.removeRange === 'function') {
        selection.removeRange(range)
      } else {
        selection.removeAllRanges()
      }
    }

    if (mark) {
      document.body.removeChild(mark)
    }

    reselectPrevious()
  }

  return success
}

var _default = copy
exports.default = _default
